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Design variables optimization effects on acceleration and contact force of the double sliders-crank mechanism having multiple revolute clearance joints by use of the Taguchi method based on a grey relational analysis
Sādhanā ( IF 1.6 ) Pub Date : 2020-05-12 , DOI: 10.1007/s12046-020-01346-w
Ngoc-Thai Huynh , Shyh-Chour Huang , Thanh-Phong Dao

This study developed a mechanism with two sliders for a planer machine, in order to enhance productivity. First, the effects of the clearance size and seven imperfect revolute joints on the dynamic characteristics of the proposed mechanism were analyzed by finite element analysis in ANSYS software. In order to improve the dynamic behavior, an optimal design was carried out via the Taguchi method with grey relational analysis. The simulation results demonstrated that the clearance size has a slight effect on the velocity and greatly affects the accelerations of the two sliders and contact forces in the seven revolute clearance joints. The values of velocity, acceleration of the two sliders and contact force increased when the clearance size increased, as compared with an ideal joint. It was found that the optimal design parameters for both the acceleration of the first slider and the contact force in the first revolute clearance joint (RCJ) are an input velocity at 500 rpm, a length of bearing at 15 mm, a journal radius at 9.7 mm, the material’s structural steel with a Young’s modulus of 69 GPa and a clearance at 0.1 mm. The optimal results of acceleration and contact force are 186.45 (m/s2) and 106.854 (N) respectively, with a 3.92% error for acceleration and 9.99% for contact force compared with the simulation results.



中文翻译:

基于灰色关联分析的田口法设计变量优化对具有多个旋转间隙关节的双曲柄曲柄机构的加速度和接触力的影响

这项研究开发了一种用于刨床的带有两个滑块的机构,以提高生产率。首先,通过ANSYS软件中的有限元分析,分析了间隙尺寸和七个不完善的旋转接头对所提出机构动力学特性的影响。为了改善动态性能,通过Taguchi方法进行了灰色关联分析,进行了优化设计。仿真结果表明,间隙尺寸对速度影响很小,并且极大地影响了两个滑块的加速度和七个旋转间隙接头的接触力。与理想接头相比,当间隙尺寸增加时,速度,两个滑块的加速度和接触力的值会增加。结果发现,第一滑块的加速度和第一旋转间隙接头(RCJ)中的接触力的最佳设计参数是输入速度为500 rpm,轴承长度为15 mm,轴颈半径为9.7。 mm,材料的结构钢,杨氏模量为69 GPa,间隙为0.1 mm。加速度和接触力的最佳结果为186.45(m / s2)和106.854(N),与模拟结果相比,加速度误差为3.92%,接触力误差为9.99%。

更新日期:2020-05-12
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